Sewing-machine.



R. L.`LYONS.

SEWING MACHINE.

APPLICATION FILED 1uLY24,19|4.

Patented July 9, 1918.

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v Tm #u R. L. LYONS.

SEWING MACHINE.

APPLICATION FILED IuLY 24. 1914.

Patented July 9, 1918.

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ROBERT L. LYONS, 0F WALTHAM, MASSACHUSETTS, SSIGNOR TO THE FREDERICKOSANN COMPANY; OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

SEWING-MACHINE.

Specification of Letters Patent.

Patented July 9, 1918.

- Application led J'uly 24, 1914. SeriaI N0. 852,782.

cation, reference being had to the accompanying drawings, forming partthereof.

This invention has reference to an improved sewing machine for sewing onsnap fasteners and other similar devices having axes around which arearranged in symmetrical order means to be attached t0 material bystitches.-

One object of the invention is to sew by 'y machine, fastening devicesordinarily known as snap fasteners so that the groups of sewing stitchesmay extend beyond the periphery of the fastener and the crossing threador threads between such stitches need not interfere with the operationof the fastener.

Another object of the invention is to sew by machine, fasteners of thegeneral nature referred to so that the groups of stitches may extendapproximately radially and that the crossing from one group of stitchesto another extends outside the periphery of the fastener.

Another object of the invention is to sew by machine, fasteners of thegeneral nature referred to and having needle passages that stitches fromall of said passages may be sewn to extend beyond the periphery of thefastener as a succession of steps in one complete sewing operation orcycle without arresting the operation of the machine.

Another object of the invention is to improve the construction of sewingmachines particularly with reference to the construc' tion of the workvices.

Other objects of the invention will appear from the followingdescription.

The invention consists in the improved method of sewing on fasteners ofthe nature described.

rThe invention also consists in the manner of sustaining and operatingthe work relative to the needle. l

. rlhe invention also consists in such novel sustaining and holdingdefeatures of construction and combination of parts as shall hereinafterbe more fully described and pointed out in the claims.

Figure 1, represents a side view of the improved sewing machine, partsof the same being broken away.

Fig. 2, represents a. sectional plan view of the same taken on line 2 2Fig. l.

Y Figs. 3 and l, represent side views of porltions of the improvedpresser foot or. holder.

Fig. 5, represents a plan view of the same.

Fig. 6, represents a plan view of a fastener member attached to"a pieceof fabric by the new method.

Fig. 7, represents an enlarged plan view of parts of the machine to showdetails of parts by which the work holder is caused to vibrate.

Fig. 8, represents a sectional view taken on line 8 8 Fig. 7.

Fig. 9, represents a similar view taken on line 9 9 Fig. 7 and, inaddition, showing a sectional view of parts of the completed work.

Similar reference characters designate.

corresponding parts throughout.

Fasteners of the nature herein referred to usually com-prise a pair ofdisks or bases furnished with complemental engaging devices of some kindwhich define axes of symmetry around which are arranged perforations.openings or needle passages through which a needle may pass in theoperation of sewing said disks or`bases to parts of garments or to otherarticles adapted to he temporarily secured together by the engagement ofthe respective engaging devices of said fasteners. As such engagingdevices are generally located at or near the center of said disks orbases the manner of separating the same is to exert a separating strainon the edges or peripheries of said disks and sometimes this may beaccomplished by pulling apart the fabric to which said bases areattached and this operation is best accomplished if the edges orperipheries of the fastener members or disks are secured to the fabricas it is evident that such separation is facilitated by the leverage ofthe disks at their diameters and that the pull of the stitches, in theseparating movement of the parts to which the fasteners are attached,should be exerted as near as possible to the reatest diameters of thefastener members.

Usually the perforations or needle passages of the fastener members arefurnished out. of the sheet metal of said members so that saidperforations have sharp edges which are liable to cut the thread if agroup of stitches is sewn through two of said perforationsA and drawntight, while if the group of stitches is sewn through but one of saidperforations and extends over the raised edge of the fastener membersaid stitches are not necessarily drawn tight against the raw or sharpedge of the perforation. It is also desirable to avoid placing stitchesor crossing threads between groups of stitches across the spring arms orother devices of the fasteners as the presence of such stitches tends tohold said devices from operation.

As shown inthe drawings in its preferred form 10 indicates the ,bed ofthe machine .having the usual frame 11 having the arm 12 and the head 13which latter is furnished with a guide, of any well known construction,for the needle bar 14 which needle bar is operated in any usual manner.The bed 10 at its forward end has the needle passage 15, Fig. 2, and hasalso the depending shafts 16 and 17 on which respectively are rotatablymounted thecams 18 and 19 furnished with the gears 20 and 21 driven fromthe gears 22 and 23 of the main shaft 24. -This latter shaft isjournaled in. bearings beneath or withinthe bed 10` and drives thelooper 25 in any known manner. Also depending from the bed 10 are thebearings 26 and 27 in. which rare journaled the follower shafts 28 and29 having at their lower ends the follower arms 30 and 31 respectively.having followers which are engaged with the grooves or channels oftheir related cams 18 and 19.

The work carriage, indicated as a whole by character .32 is mounted forlongitudinal and sidewise movement on the bed 10 and is connected bymeans of adjustable members 33, 33 and 332 with the follower shaft 28whereby the vibratory movement of the follower of arm 30, effected bycam 18 is transmitted to said work carriage to move said carriage backand forth longitudinally and at times to arrest such movement or topermit the carriage to dwell in such movement while cam 191 acts on itsrelated follower to actuate follower arm 31 and shaft 29 to effectlateral movement of the work carriage 32 by means of the adjustablemembers 34by `which said shaft 29 and said carriage are connected, suchlateral movement of carriage 32 in one direction being assisted byspring `35 attached to a portion of said carriage and to a fixedl art ofthe machine.

Y Carriage 32 has t e forwardly extending work supporting plate 36 havintheopening or needle passage 37 into wh1ch extends the tongue 38 havingthe enlarged end 39, which approximately defines the axis of the opening37. The shape and dimensions of 4vthe needle passage 37 between its edgeand the edge of tongue 381and its end 39 are suchA Lavaca? the variousmovements of carriage 32 to per.- mit the passage of the needle in thesewing of the several groups of attaching stitches and the tongue 38. ismade narrow to clear vthe needle in its movement in making they 'tenermembers and spaced from said stud is Ythe4 holding pin 44 adapted toengage with a notch or other means with which the fastener members areprovided as will here-4 after be more fully described.. Member 42 issimilar in all respects to member 41 except-that the lstud 43 of memberv42 is displaced by the concavity 45 to engage with thecentrallydisposed head of fa fastener member as is indicated in Fig. 3. I havehowever found that the stud 43 of member 4l maybe supplied with aconcavity similar to 45 of sutlicient size to accomplish the centeringand, with the assistance of the pin 44, the holdingl of a fasteningmember hav! in a suitable ead.

lffrovision is made for lifting the free end of the pivotedarm 40 torelease the `presser and holder'member 41 or 42, as the case may be,from the work, and such provision comprises the rock shaft 46 mounted inbearings of the machinel army 12 and having levers of which 48 isconnected by the chain 49 and the adjustable member 50 with a memberofthe pivoted arm 40 of said carriage. Y j

One of the' fastener members adapted to be attached by the improvedmethod is shown in Fig. 3 in side view and in Fig. 6

1n plan view as attached by sewing stitches.

It is to be"understood however that this showing is more particularlyfor the purpose of illustrating the operation of the improved machine.

As shown in said Figs. 3 and 6 the fastener member comprises the disk ausually of sheet metal and having the central stud` of attachingstitches are sewn and g the perforation adapted to receive portions ofthe final group ofstitches, the notch d being located between theinitial and final sewing operations. located member approximatelydefines the axis of the fastener with respect lto the symmetricalarrangementl about said axis of the The stud 'b or any similarlyperforations e, f, f and g, and with reference to which axis 1t ispreferred to extend the sewing stitches radially from saidperforations.l to points on the work outside the 5 edge c.

In preparing for the operation of the machine the arm 40 of theworkcarriage, with its presser, in the present instance 42', is raised and apiece of fabric h is placed on the workvsupporting plate 36 covering theneedle passage 37. One of the fastener members is placed on said fabrich and the arm 40 with its presser 42 is permitted to descend while thefastener member is adjusted to bring its head or stud. into registrywith the concavity 45 and its notch d in position to receive. theholding pin 44. The engagement of these parts will effect the holding orretaining of kthe fastener member at two points within its periphery andis for the .purpose of 4preventing rotation of the fastener during thesewing op,-

eration, and also for the purpose of posi-- tioning the perforation e ofthe fastener to receive the needle in the operation of sewin the firstgroup of attaching stitches.

resumably the machine is supplied with needle and thread and isotherwise in condition for sewing. When the machine is started the firstgroup of stitches is sewn approximately radially of the axis of thefastener, that is through the perforation e and outward to a point onthe fabric h and such group of stitches is completed at said point sothat when the fastener members are moved, by the operation of cams 18,19 and the parts for transmitting motion therefrom to the work holder,to bring one of the perforations f, f of the fastener in position toreceive the needle in sewing the next group of stitches the crossingthreads z', z' will vextend outside the periphery of the fastener. Thesuccessive positioning movements of the work, and of course thevibratory movement thereof to sew the stitches over the edge c of thefastener member, is continued until groups of stitches have been formedthrough the required number of perforations f, f and the last group ofstitches is sewn through perforation g of said fastener after which thcwork is removed from the machine or is moved along to bring another partof the fabric into posiim beneath the presser and holding memr.-

The fastener mem'ber complemental to that shown in Figs. 3 and 6 of thedrawin is also provided with the perforations e, f, and g and with thenotch d extending in ward from its periphery.

It is of course t0 be understood that this invention is not limited tothe particular Vwork holder orto themeans ,for effecting relativemovement between the work and 65 Ithe needle, for instance, this may beaccomplished by the well known expedient of slidably mounting the needlebar in a guide and effecting vthe lateral movement of said y 4 guide.

. of my invention.

Having thus described my invention I claim as new and desire to secureby Letters Patent.

1. A sewing machine comprising stitch forming means, a Work holdermovably mounted, and means for effecting relative lateral periodicpositioning movement in two directions between said work holder and saidstitchV forming devices, for arresting l said .movement at times and foreffecting relative stitch forming vibrations at the times at which saidpositioning movements l are arrested.

2. A sewing machine comprising stitch forming devices, a work holdermovably mounted, and means for effecting relative positioning movementin two lateral directions between-said workv holder and said stitchforming devices to position lseveral .points around a common axis inregistry with said stitch forming devices, and for changing saidpositioning movement to vibratory stitch forming movements at each ofsaid points.

3. A -sewing machine comprising stitch forming means, a work holder forwork having an axis of symmetry, and means for effecting relativelateral positioning movements in two directions between said work holderand said stitch forming devices to position the work in lregistry 'withthe' needle at several points around the axis ofy symmetry of the workand for changingI such positioning movement to la'teral stitch formmgvibrations radially with respect to said vaxis at each of said points ofregistry.

-4.- A sewing machine comprising stitch forming means, avvork holder forwork hav. l ing an axis of symmetry, and means for moving said workholder in two lateral directions relative to such stitch forming devicesand for changing said lateral movement of the work holder atpredetermined points to a vilbratory sti'tch forming movement indirections radial of said axis.

5. A sewing machine comprising a work h older .for a snap fastenermember and mate- 'r1al, sald work holder having complemental means forengaging said member and material, stitch forming means, and mechanismto e'ect relative lateral positioning movements between said Work holderand said stitch forming means to posltion the Work in registry with saidstitch formin means successively at several points relate' to theperiphery of said member and fer changing saidy positioning movement'ateach of said points of registry to a vibratory movement to form stitchesextending from points Within the margin of said fastener member topoints outside said margin.

6. A sewing machine comprising stitch forming means, a Work holder forWork having an axis of symmetry movably mounted and having means forsustaining Work horizontally, and a presser defining the median line ofthe Wdrk, andmeans for moving said Work holder laterally andlongitudinally of said presser and for changing said movement of theWork holder at times to a vibratory stitch forming movement wherebygroups of stitches extending radivLarges? ally of said axis may beformed at both sides p' of said presser.

7. A sewing machine ycomprising stitch forming means, a Work holderfurnished with Va Work sustaining plate having .a needle passage and atongue extending to the axis of said passage, and a Work centering meanscooperating solely with the end vof said tongue. c

8. A sewing machine comprising stitch forming means, a Work holderfurnished With a Work sustaining plate having a needle passage and atongue extending to theaxis of said passage, and a presser memberpivotally mounted on said Work holder andv

